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/* Definitions of target machine for GNU compiler, for IBM S/390.

   Copyright (C) 2000, 2002, 2003, 2004, 2005, 2007, 2008, 2009

   Free Software Foundation, Inc.

   Contributed by Hartmut Penner (hpenner@de.ibm.com)

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under

the terms of the GNU General Public License as published by the Free

Software Foundation; either version 3, or (at your option) any later

version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY

WARRANTY; without even the implied warranty of MERCHANTABILITY or

FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

for more details.

You should have received a copy of the GNU General Public License

along with GCC; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

/* Prototypes of functions used for constraint evaluation in

   constraints.c.  */

extern int s390_mem_constraint (const char *str, rtx op);

extern int s390_O_constraint_str (const char c, HOST_WIDE_INT value);

extern int s390_N_constraint_str (const char *str, HOST_WIDE_INT value);

extern int s390_float_const_zero_p (rtx value);

extern bool s390_check_symref_alignment (rtx addr, HOST_WIDE_INT alignment);

/* Declare functions in s390.c.  */

extern void optimization_options (int, int);

extern void override_options (void);

extern HOST_WIDE_INT s390_initial_elimination_offset (int, int);

extern void s390_emit_prologue (void);

extern void s390_emit_epilogue (bool);

extern void s390_function_profiler (FILE *, int);

extern void s390_conditional_register_usage (void);

extern void s390_set_has_landing_pad_p (bool);

extern bool s390_hard_regno_mode_ok (unsigned int, enum machine_mode);

extern bool s390_hard_regno_rename_ok (unsigned int, unsigned int);

extern bool s390_class_max_nregs (enum reg_class, enum machine_mode);

#ifdef RTX_CODE

extern int s390_extra_constraint_str (rtx, int, const char *);

extern int s390_const_ok_for_constraint_p (HOST_WIDE_INT, int, const char *);

extern int s390_const_double_ok_for_constraint_p (rtx, int, const char *);

extern int s390_single_part (rtx, enum machine_mode, enum machine_mode, int);

extern unsigned HOST_WIDE_INT s390_extract_part (rtx, enum machine_mode, int);

extern bool s390_contiguous_bitmask_p (unsigned HOST_WIDE_INT, int, int *, int *);

extern bool s390_split_ok_p (rtx, rtx, enum machine_mode, int);

extern bool s390_overlap_p (rtx, rtx, HOST_WIDE_INT);

extern bool s390_offset_p (rtx, rtx, rtx);

extern int tls_symbolic_operand (rtx);

extern bool s390_match_ccmode (rtx, enum machine_mode);

extern enum machine_mode s390_tm_ccmode (rtx, rtx, bool);

extern enum machine_mode s390_select_ccmode (enum rtx_code, rtx, rtx);

extern void s390_canonicalize_comparison (enum rtx_code *, rtx *, rtx *);

extern rtx s390_emit_compare (enum rtx_code, rtx, rtx);

extern void s390_emit_jump (rtx, rtx);

extern bool symbolic_reference_mentioned_p (rtx);

extern bool tls_symbolic_reference_mentioned_p (rtx);

extern bool legitimate_la_operand_p (rtx);

extern bool preferred_la_operand_p (rtx, rtx);

extern int legitimate_pic_operand_p (rtx);

extern int legitimate_constant_p (rtx);

extern bool legitimate_reload_constant_p (rtx);

extern rtx legitimize_pic_address (rtx, rtx);

extern rtx legitimize_reload_address (rtx, enum machine_mode, int, int);

extern enum reg_class s390_preferred_reload_class (rtx, enum reg_class);

extern enum reg_class s390_secondary_input_reload_class (enum reg_class,

                                                         enum machine_mode,

                                                         rtx);

extern enum reg_class s390_secondary_output_reload_class (enum reg_class,

                                                          enum machine_mode,

                                                          rtx);

extern void s390_reload_larl_operand (rtx , rtx , rtx);

extern void s390_reload_symref_address (rtx , rtx , rtx , bool);

extern void s390_expand_plus_operand (rtx, rtx, rtx);

extern void emit_symbolic_move (rtx *);

extern void s390_load_address (rtx, rtx);

extern void s390_expand_movmem (rtx, rtx, rtx);

extern void s390_expand_setmem (rtx, rtx, rtx);

extern void s390_expand_cmpmem (rtx, rtx, rtx, rtx);

extern bool s390_expand_addcc (enum rtx_code, rtx, rtx, rtx, rtx, rtx);

extern bool s390_expand_insv (rtx, rtx, rtx, rtx);

extern void s390_expand_cs_hqi (enum machine_mode, rtx, rtx, rtx, rtx);

extern void s390_expand_atomic (enum machine_mode, enum rtx_code,

                                rtx, rtx, rtx, bool);

extern rtx s390_return_addr_rtx (int, rtx);

extern rtx s390_back_chain_rtx (void);

extern rtx s390_emit_call (rtx, rtx, rtx, rtx);

extern void s390_expand_logical_operator (enum rtx_code,

                                          enum machine_mode, rtx *);

extern bool s390_logical_operator_ok_p (rtx *);

extern void s390_narrow_logical_operator (enum rtx_code, rtx *, rtx *);

extern void s390_split_access_reg (rtx, rtx *, rtx *);

extern bool s390_output_addr_const_extra (FILE*, rtx);

extern void print_operand_address (FILE *, rtx);

extern void print_operand (FILE *, rtx, int);

extern void s390_output_pool_entry (rtx, enum machine_mode, unsigned int);

extern int s390_agen_dep_p (rtx, rtx);

extern rtx s390_load_got (void);

extern rtx s390_get_thread_pointer (void);

extern void s390_emit_tpf_eh_return (rtx);

extern bool s390_legitimate_address_without_index_p (rtx);

extern bool s390_decompose_shift_count (rtx, rtx *, HOST_WIDE_INT *);

extern int s390_branch_condition_mask (rtx);

extern int s390_compare_and_branch_condition_mask (rtx);

#endif /* RTX_CODE */

#ifdef TREE_CODE

extern void s390_function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode,

                                       tree, int);

#ifdef RTX_CODE

extern rtx s390_function_arg (CUMULATIVE_ARGS *, enum machine_mode, tree, int);

extern rtx s390_function_value (const_tree, const_tree, enum machine_mode);

#endif /* RTX_CODE */

#endif /* TREE_CODE */